Lens device, and imaging apparatus

Abstract

To provide a lens device that can prevent an increase in the area around a motor, and reduce the number of components for positioning.SOLUTION: A lens device has: a lens movable frame that holds a lens and is movable in an optical axis direction; an actuator unit for moving the lens movable frame; a sensor magnet that is magnetized in a multi-polar state in a circumferential direction, and attached to be integrally movable with an output shaft of the actuator unit; a sheet-metal member that holds the actuator unit and rotatably supports the output shaft; a magnetic sensor that is arranged opposite to the sensor magnet in a direction orthogonal to the output shaft; and a sensor holding member that holds the magnetic sensor. The sheet-metal member is formed into a U-shape, and includes portions opposite to each other along the optical axis direction. The actuator unit is fixed to opposing one side of the sheet-metal member, and the sensor holding member is fixed to opposing other side of the sheet-metal member in a direction along an optical axis.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a lens device and an imaging device.

Background Art

[0002] Conventionally, in a lens barrel used for optical devices such as video cameras, a lens driving device that moves a lens group using a stepping motor during zooming or focusing has been adopted. In particular, in a lens driving device that requires high-speed movement of the lens group, a method is adopted in which the rotation angle of the stepping motor is detected by a sensor and the excitation timing is feedback-controlled to the stepping motor. As for the sensor specifications used for this control, it is required to capture the motor rotation angle more accurately in order to improve the controllability of the stepping motor that rotates at high speed.

[0003] To satisfy these needs, a magnetic sensor is adopted, and a sensor magnet that generates a magnetic field corresponding to this magnetic sensor is integrally arranged on the output shaft of the stepping motor. In addition, in the sensor magnet and the magnetic sensor, if the facing positional relationship is shifted, the controllability may be impaired, so a structure for adjusting the position of the magnetic sensor can be provided. However, by adopting these structures, the periphery of the stepping motor may be enlarged, or components for adjusting the position of the magnetic sensor may be additionally required.

[0004] As an example of a lens device that employs position adjustment of a magnetic sensor, for example, in Patent Document 1, a structure is proposed in which a sensor holding member is held by a sheet metal having a U-shape of a stepping motor.

Prior Art Documents

Patent Documents

[0005]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0006] In the first embodiment of Patent Document 1, for the position adjustment of the magnetic sensor, an elastic sensor holding member is held by a sheet metal having a U-shape, and the position is adjusted by pressing the sensor holding member with a position adjustment screw. Further, in the second embodiment, a rigid sensor holding member is held by a sheet metal having a U-shape, and among the two directions in which position adjustment is possible, one is to slide the sensor holding frame and the other is to adjust the position using a spacer.

[0007] However, in any of the embodiments, since a structure is adopted in which the sensor holding member is screwed from the direction orthogonal (radial) to the motor output shaft, this structure enlarges the periphery of the motor, and parts for position adjustment are required.

[0008] Therefore, an object of the present invention is to provide a lens device capable of suppressing the enlargement of the periphery of the motor and reducing the number of parts for position adjustment.

Means for Solving the Problems

[0009] In order to achieve the above object, a lens device as one aspect of the present invention includes a lens moving frame that holds a lens and is movable in the optical axis direction, an actuator unit for moving the lens moving frame, a sensor magnet that is magnetized with multiple poles in the circumferential direction and is rotatably attached integrally with the output shaft of the actuator unit, a sheet metal member that holds the actuator unit and rotatably supports the output shaft, a magnetic sensor that is disposed to face the sensor magnet in a direction orthogonal to the output shaft, and a sensor holding member that holds the magnetic sensor. The sheet metal member is formed in a U-shape and includes portions facing each other along the optical axis direction. The actuator unit is fixed to one of the opposing sides of the sheet metal member, and the sensor holding member is fixed to the other of the opposing sides of the sheet metal member in the direction along the optical axis.

Effects of the Invention

[0010] According to the present invention, it is possible to provide a lens device that suppresses an increase in size around the motor and enables reduction in the number of components for position adjustment.

Brief Description of the Drawings

[0011]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Modes for Carrying Out the Invention

[0012] Hereinafter, with reference to the accompanying drawings, preferred embodiments of the present invention will be described using examples and diagrams. In each figure, the same members or elements are given the same reference numerals, and redundant descriptions are omitted or simplified.

[0013] <Embodiment 1> FIG. 1 is a perspective view of a lens driving device in a lens barrel (lens device) 100 in Embodiment 1. In FIG. 1, the direction along the optical axis О is taken as the Z-axis, the horizontal direction orthogonal to the Z-axis is taken as the X-axis, and the direction perpendicular (vertical) to the X-axis is taken as the Y-axis. The driving structure of the lens moving frame 11 by the drive unit 12 will be described later. In Embodiment 1, the drive unit 12 will be described as an example in which a stepping motor is adopted.

[0014] The lens barrel 100 in the present embodiment can form an imaging device together with a camera body (not shown) where an imaging element or the like is disposed. The imaging device is configured to be able to photograph an image formed through the lens barrel 100. Further, the lens barrel 100 in the present embodiment may be provided with a mount (mount portion). In that case, the lens barrel 100 and the mount can function as an interchangeable lens. And the mount in the lens barrel 100 is configured to be attachable to the mount of the camera body, and can be communicably connected to the camera body by being attached to the mount of the camera body. Note that the imaging device may be an imaging device in which the lens barrel 100 and the camera body are integrated.

[0015] Hereinafter, the structure related to the stepping motor and the sensor in the lens barrel 100 of Embodiment 1 will be described with reference to FIGS. 2, 3, and 4.

[0016] FIG. 2 is a projection view of the drive unit 12 included in the lens barrel 100 in Embodiment 1. FIG. 2(A) is a view of the drive unit 12 seen from the X-axis direction (first side view). FIG. 2(B) is a view of the drive unit 12 seen from the Y-axis direction (front view). FIG. 2(C) is a view of the drive unit 12 seen from the side opposite to the X-axis direction with respect to FIG. 2(A) (second side view).

[0017] FIG. 3 is a cross-sectional view taken along the line A-A of the drive unit 12 in FIG. 2. FIG. 4 is a diagram showing an example of the configuration of the drive unit 12 in Embodiment 1. FIG. 4(A) is a view B of the drive unit 12 shown in FIG. 2. FIG. 4(B) is an enlarged view of part C of the drive unit 12 shown in FIG. 4(A). FIG. 4(C) is a cross-sectional view taken along the line D-D of the drive unit 12 shown in FIG. 4(A).

[0018] As shown in FIG. 2, an actuator unit 4 is fixed to a sheet metal (sheet metal member) 5 formed in a U-shape, and a motor shaft 3, which is an output shaft of the actuator unit 4, is rotatably supported. The actuator unit 4 is fixed to one side of the portions facing each other in the direction along the optical axis in the U-shaped sheet metal 5. Further, a sensor holder 6, which will be described later, is fixed to the other side that is located at a position facing one side among the portions constituting the U-shaped sheet metal 5 in the direction along the optical axis O. Further, the sheet metal 5 is preferably made of a metal material.

[0019] The sheet metal 5 has a first rising portion 50a (first portion, the other side of the U-shaped sheet metal 5) and a second rising portion 50b (second portion, one side of the U-shaped sheet metal 5). That is, the sheet metal 5 forms a U-shape by forming the first rising portion 50a and the second rising portion 50b. The first rising portion 50a and the second rising portion 50b are portions facing each other in the direction along the optical axis O direction. The first rising portion 50a has a surface 5a that is a surface on the inner side direction of the first rising portion 50a, and a surface on the outer side direction, which is a surface 5b that is on the opposite side of the optical axis O direction from the surface 5a. The second rising portion 50b has a surface 5c that is a surface on the inner side direction of the second rising portion 50b, and a surface on the outer side direction, which is a surface 5d that is on the opposite side of the optical axis O direction from the surface 5c.

[0020] Incidentally, the actuator unit 4 is fixed to the surface 5d that is the outer surface of the second rising portion 50b, and the sensor holder 6, which will be described later, is fixed to the surface 5a that is the inner surface of the first rising portion 50a.

[0021] A sensor magnet 1, which is cylindrical and magnetized with multiple poles in the circumferential direction, is integrally fixed to the motor shaft 3. As the motor shaft 3 rotates, the sensor magnet 1 also rotates. In other words, the sensor magnet 1 is magnetized with multiple poles in the circumferential direction and is rotatably attached integrally with the motor shaft 3, which is the output shaft of the actuator unit 4. The sensor magnet 1 is arranged at a position facing the other U-shaped side on one side of the sheet metal 5 in the direction along the optical axis O. Specifically, the sensor magnet 1 is arranged on the side of the surface 5a, which is the inner surface of the first rising portion 50a.

[0022] Also, a magnetic sensor 2 is arranged so as to face the periphery of the sensor magnet 1. The magnetic sensor 2 is electrically connected to the flexible substrate 7 by soldering. Further, the magnetic sensor 2 and the flexible substrate 7 are held by a sensor holder (sensor holding member) 6. When the position of the sensor holder 6 is determined, the positional relationship between the magnetic sensor 2 and the sensor magnet 1 is determined. The sensor holder 6 is preferably made of a resin material.

[0023] The sensor holder 6 is fixed to the sheet metal 5 by fixing screws (fastening members) 13. Specifically, the fixing screws 13 are inserted from the surface 5b side of the first rising portion 50a, and the fixing screws 13 are inserted into the sensor holder 6 arranged on the surface 5a side, thereby fixing the sensor holder 6 to the surface 5a of the first rising portion 50a. Note that a first hole (not shown) for passing the screw portion of the fixing screw 13 is formed in the first rising portion 50a. Also, a second hole (not shown) for inserting the fixing screw 13 is formed in the sensor holder 6.

[0024] Here, the diameter of the first hole formed in the first rising portion 50a is formed to be larger than the diameter of the threaded portion of the fixing screw 13 and smaller than the diameter of the head portion of the fixing screw 13. Further, the diameter of the second hole formed in the sensor holder 6 is formed to be smaller than the diameters of the threaded portion and the head portion of the fixing screw 13. That is, the fixing screw 13 fixes the sensor holder 6 to the sheet metal 5 through the first hole having a diameter larger than the diameter of the threaded portion of the fixing screw 13, so that the head portion of the fixing screw 13 is exposed on the surface 5b side of the first rising portion 50a as shown in FIG. 4. Further, the fixing screw 13 is preferably a screw capable of fixing a metal member such as a drill screw, but is not limited thereto, and any screw may be used as long as it can fix the sheet metal 5 and the sensor holder 6. Also, for example, as a fastening member other than a screw, a fastening member such as a screw or a rivet may be used.

[0025] In addition, in the present embodiment, as described above, the first hole is formed in the first rising portion 50a of the sheet metal 5 as a pilot hole for passing the threaded portion of the fixing screw. Here, the diameter of the first hole is preferably larger than the diameter of the threaded portion of the fixing screw 13, but may be equal to or smaller depending on, for example, the type of the screw, and a tap corresponding to the thread may be cut. Further, the shape of the first hole formed in the first rising portion 50a of the sheet metal 5 is not limited to a circular shape, and may be, for example, a loose hole. Also, it is preferable that there is one first hole, but a plurality of first holes may be formed. Also, forming the first hole and the second hole is preferable in terms of the fixing method using the fixing screw 13, but the first hole and the second hole may not be formed depending on the type of the screw or the like. For example, as a case where neither or both of the first hole and the second hole are not formed, a case where a screw capable of fixing the sensor holder 6 to the sheet metal 5 without a pilot hole is used is assumed.

[0026] Further, a bearing 3a for rotatably supporting the motor shaft 3 is fixed to the first rising portion 50a of the sheet metal 5. Specifically, the bearing 3a is fixed to the sheet metal 5 from the surface 5b which is the outer surface of the first rising portion 50a of the sheet metal 5.

[0027] As described above, in the present embodiment, the positional relationship between the sensor holder 6 and the actuator unit 4 is as follows. The sensor holder 6 is fixed to the surface 5a which is the inner surface of the first rising portion 50a of the sheet metal 5. The actuator unit 4 is fixed to the surface 5d which is the outer surface of the second rising portion 50b of the sheet metal 5. That is, the sensor holder 6 is fixed to the inner surface 5a of the first rising portion which is a surface facing in the direction along the optical axis O with the inner surface 5c which is the inner surface of the second rising portion 50d of the sheet metal 5.

[0028] Next, the drive structure of the lens moving frame 11 by the drive unit 12 of the lens barrel 100 will be described. The lens moving frame 11 holds a lens (optical element) 11a. Further, the lens moving frame 11 is held movably in the direction along the optical axis O (Z-axis direction) by the guide bar 9 and the guide bar 10.

[0029] In addition, a rack 8 supported by an axis parallel to the optical axis О is attached to the lens moving frame 11. The rack 8 has a tooth portion (not shown) and meshes with the tooth portion (not shown) of the motor shaft 3. Therefore, when the motor shaft 3 rotates with the actuator unit 4 as a drive source, the lens moving frame 11 moves in the direction along the optical axis O (Z-axis direction) along the guide bar 9 and the guide bar 10 via the rack 8.

[0030] Incidentally, the lens moving frame 11 has a function of detecting a reference position when moving in the direction along the optical axis O (Z-axis direction) by a photo interrupter (detection unit) etc. not shown. With such a configuration, the rotation angle of the motor shaft 3 can be calculated from the output of the magnetic sensor 2, and the current position of the lens moving frame 11 with respect to the reference position can be obtained. Then, for example, by controlling the current applied to the actuator unit 4 based on the difference between the obtained current position of the lens moving frame 11 and the target position by a control unit not shown, drive control of the lens barrel 100 is executed. The control unit not shown can be composed of at least one computer having a CPU and a memory.

[0031] In this drive control, in order to grasp the exact position of the lens moving frame 11 from the output of the magnetic sensor 2, it is desirable to accurately position the magnetic sensor 2 at a predetermined position relative to the sensor magnet 1. This is because when the gap (distance in the Y-axis direction) between the sensor magnet 1 and the magnetic sensor 2 changes, it mainly affects the amplitude of the output value of the magnetic sensor 2. Also, when the position in the X-axis direction, that is, the positional relationship in the direction orthogonal to the rotation axis of the sensor magnet 1 changes, it may also mainly affect the phase difference of the output value of the magnetic sensor 2.

[0032] Therefore, for better controllability, the positional relationship between the sensor magnet 1 and the magnetic sensor 2 needs to be arranged within a predetermined range in both the X-axis direction and the Y-axis direction. Thus, in this embodiment, a structure is adopted in which the position of the magnetic sensor 2 relative to the sensor magnet 1 is adjusted and fixed as follows.

[0033] Figures 4(B) and 4(C) show a structure that enables adjustment of the position of the sensor holder 6 with respect to the surface 5a of the first rising portion 50a in the sheet metal 5. The sensor holder 6 has a projection (protruding portion) 6a for position adjustment. The projection is a cylindrical position adjustment boss. Also, a position adjustment hole 5e is provided in the first rising portion 50a. Then, as shown in Figure 4(C), when the sensor holder 6 is arranged on the first rising portion 50a, it is arranged with the projection 6a inserted (inserted) into the position adjustment hole 5e. The diameter (inner diameter) of the position adjustment hole 5e is larger than the diameter (outer diameter) of the projection 6a. The position adjustment hole 5e is a through hole that penetrates from the surface 5a to the surface 5b of the first rising portion 50a in the direction along the optical axis O.

[0034] Further, the sensor holder 6 is fixed to the surface 5a of the first rising portion 50a by the fixing screw 13 inserted in the same direction as the direction in which the motor shaft 3 extends (Z-axis direction), that is, from the surface 5b side of the first rising portion 50a. Incidentally, as described above, the diameter of the positioning hole 5e is larger than the diameter of the protrusion 6a. Therefore, before fixing the sensor holder 6 to the sheet metal 5 with the fixing screw 13, the protrusion 6a of the sensor holder 6 can move (position can be adjusted) within the range of the distance difference between the positioning hole 5e and the diameter of the protrusion 6a.

[0035] And when the sensor magnet 1 is fixed to the motor shaft 3, it is disposed on the surface 5a side of the first rising portion 50a. Therefore, by moving (positioning) the sensor holder 6 that holds the magnetic sensor 2, the position of the magnetic sensor 2 with respect to the sensor magnet 1 can be adjusted. That is, the sensor holder 6 is configured to be adjustable in a first direction (Y-axis direction) parallel to the axis connecting the rotation axis of the sensor magnet 1 and the magnetic sensor 2, a second direction (X-axis direction) parallel to the axis orthogonal to the rotation axis and the first direction, or both.

[0036] Incidentally, in the present embodiment, after adjusting the position of the sensor holder 6, the sensor holder 6 is fixed to the sheet metal 5 with the fixing screw 13. At the time of the fixing, the fixing is performed after ensuring that the fixed position of the sensor holder 6 after adjusting the position using a jig or the like to prevent displacement does not shift.

[0037] Further, the protrusion 6a is preferably cylindrical, but may be a protrusion having a rectangular or polygonal shape. In that case, the positioning hole 5e has a shape corresponding to the shape of the protrusion 6a. And similarly, the diameter (inner diameter) of the positioning hole 5e is made larger than the diameter (outer diameter) of the protrusion 6a so that the position can be adjusted.

[0038] Furthermore, according to the present embodiment, since no parts are required for adjusting the position of the magnetic sensor 2, it is possible to suppress an increase in size around the motor (actuator unit 4) and reduce the number of parts used for position adjustment and the like. Further, since the sensor holder 6 is fixed with the fixing screw 13 from the axial direction (Z-axis direction) of the motor shaft 3, an increase in size in the orthogonal (X-axis or Y-axis) direction can be suppressed as compared with the case of fixing from the orthogonal (X-axis or Y-axis) direction of the motor shaft 3.

[0039] In addition, when the sensor holder 6 is fixed from the orthogonal direction of the motor shaft 3, it is necessary to provide a fixing portion in the orthogonal direction of the sheet metal 5 having a U-shape, and the shape of the sheet metal tends to become complicated. On the other hand, in the present embodiment, since the sensor holder 6 can be fixed to the surface 5a of the first rising portion 50a, it is possible to maintain the conventional U-shape and suppress the complication of the sheet metal.

[0040] As described above, according to the lens barrel 100 in the present embodiment, it is possible to suppress an increase in size around the motor and reduce the number of parts for position adjustment.

[0041] <Embodiment 2> Hereinafter, Embodiment 2 will be described with reference to FIG. 5. Embodiment 2 is different only in a partial shape and a fixing method of the sensor holder 6 in Embodiment 1. Therefore, descriptions of each member, configuration, position adjustment method, etc. common to Embodiment 1 are omitted.

[0042] FIG. 5 is a diagram showing an example of the configuration of the drive unit 12 in Embodiment 2. FIG. 5(A) is a view seen from the direction along the optical axis O and from the direction of the surface 5b of the first rising portion 50a. FIG. 5(B) is a cross-sectional view taken along the line E-E of the drive unit 12 shown in FIG. 5(A).

[0043] In Embodiment 2, the sensor holder 14 has an adhesive surface 14a. The adhesive surface 14a faces a fixing hole 5f formed in a first rising portion 50a as shown in FIG. 5(B). The fixing hole 5f is a through hole that penetrates from a surface 5a to a surface 5b of the first rising portion 50a in a direction along the optical axis O.

[0044] In Embodiment 2, with the sheet metal 5 and the sensor holder 14 in contact, that is, with the sensor holder 14 disposed on the first rising portion 50a, the sensor holder 14 is fixed to the sheet metal 5 by filling the fixing hole 5f with an adhesive. Specifically, the sensor holder 14 is adhesively fixed to the surface 5a of the first rising portion 50a.

[0045] Note that, except that the fixing method of the sensor holder 14 is adhesive fixing instead of fixing with screws, it is common to Embodiment 1. Therefore, before the sensor holder 6 is adhesively fixed, the sensor holder 14 can move in the X-axis direction and the Y-axis direction, that is, can be position-adjusted within a range of the difference in diameter between the position adjustment hole 5e and the protrusion 6a, similar to Embodiment 1.

[0046] According to Embodiment 2, in addition to the same effects as in Embodiment 1, since the fixing method employs adhesion, the number of parts can be reduced compared to the fixing method using screws or the like. Also, since there is no need to consider the protrusion of the screw head (the head of the fixing screw 13), etc., it contributes to shortening the overall length in the direction along the optical axis O (thrust direction), and thus it is possible to improve the degree of design freedom.

[0047] Note that in each of the above embodiments, any magnetic sensor can be used regardless of the type of magnetic sensor such as a Hall IC or a Hall element.

[0048] Each of the above-described embodiments is merely a representative example, and various modifications and changes can be made to each embodiment when implementing the present invention.

[0049] The disclosure of this example includes the following configurations.

[0050] (Configuration 1) A lens moving frame that holds a lens and is movable in the optical axis direction, An actuator unit for moving the lens moving frame, A sensor magnet that is magnetized with multiple poles in the circumferential direction and is rotatably attached integrally with the output shaft of the actuator unit, A sheet metal member that holds the actuator unit and rotatably supports the output shaft, A magnetic sensor that is arranged to face the sensor magnet in a direction orthogonal to the output shaft, A sensor holding member that holds the magnetic sensor, and has, The sheet metal member is formed in a U shape and includes portions facing each other along the optical axis direction, The actuator unit is fixed to one of the opposing sides of the sheet metal member, and the sensor holding member is fixed to the other of the opposing sides of the sheet metal member in a direction along the optical axis. A lens device characterized by this.

[0051] (Configuration 2) The sensor holding member is adjustable in a first direction parallel to the axis connecting the rotation axis of the sensor magnet and the magnetic sensor or in a second direction parallel to an axis orthogonal to the rotation axis and the first direction. The lens device according to Configuration 1, characterized by this.

[0052] (Configuration 3) The sheet metal member has an adjustment hole portion on the surface of the sheet metal member to which the sensor holding member is fixed, The sensor holding member has a protruding portion that is inserted into the adjustment hole portion with an outer diameter smaller than the inner diameter of the adjustment hole portion, The sensor holding member adjusts its position within the range of the distance difference in diameter between the adjustment hole portion and the protruding portion. The lens device according to Configuration 1 or 2, characterized by this.

[0053] (Configuration 4) The sensor magnet is arranged on the other side of the sheet metal member in a direction along the optical axis. The lens device according to any one of Configurations 1 to 3, characterized by this.

[0054] (Configuration 5) The lens device according to any one of Configurations 1 to 4, wherein the sensor holding member is adhesively fixed to the sheet metal member.

[0055] (Configuration 6) The sheet metal member has a through-hole portion that penetrates the surface of the sheet metal member to which the sensor holding member is fixed. The lens device according to any one of Configurations 1 to 5, wherein the sensor holding member is fixed to the sheet metal member by filling the through-hole portion with an adhesive in a state where the sheet metal member and the sensor holding member are in contact with each other.

[0056] (Configuration 7) The sheet metal member forms a U-shaped configuration by forming a first rising portion and a second rising portion. The lens device according to any one of Configurations 1 to 6, wherein the actuator portion is fixed to the outer surface of the second rising portion.

[0057] (Configuration 8) The lens device according to Configuration 7, wherein the sensor holding member is fixed to the inner surface of the first rising portion that faces the inner surface of the second rising portion in a direction along the optical axis.

[0058] (Configuration 9) The lens device further includes a fastening member for fixing the sensor holding member to the sheet metal member. The lens device according to Configuration 7 or 8, wherein the fastening member fastens the sensor holding member from the outer surface of the first rising portion.

[0059] (Configuration 10) An imaging device having the lens device according to any one of Configurations 1 to 9.

Description of Reference Numerals

[0060] 1 Sensor magnet 2 Magnetic sensor 3 Motor shaft 4 Actuator section 5 Sheet metal 5a Actuator facing surface 6 Sensor holder 12 Drive unit 13 Fixing screw 100 Lens barrel

Claims

1. a lens moving frame that holds a lens and is movable in the optical axis direction; an actuator unit for moving the lens moving frame; a sensor magnet that is magnetized with multiple poles in the circumferential direction and is rotatably attached integrally with the output shaft of the actuator unit; a sheet metal member that holds the actuator unit and rotatably supports the output shaft; a magnetic sensor that is disposed opposite to the sensor magnet in a direction orthogonal to the output shaft; a sensor holding member that holds the magnetic sensor, and having: the sheet metal member is formed in a U shape and includes portions facing each other along the optical axis direction; the actuator unit is fixed to one of the opposing sides of the sheet metal member, and the sensor holding member is fixed to the other of the opposing sides of the sheet metal member in a direction along the optical axis. A lens device characterized by this.

2. The sensor holding member is adjustable in a first direction parallel to an axis connecting the rotation axis of the sensor magnet and the magnetic sensor or in a second direction parallel to an axis orthogonal to the rotation axis and the first direction. The lens device according to claim 1, characterized by this.

3. The sheet metal member has an adjustment hole portion on the surface of the sheet metal member to which the sensor holding member is fixed; The sensor holding member has a protruding portion that is inserted into the adjustment hole portion with an outer diameter smaller than the inner diameter of the adjustment hole portion; The sensor holding member adjusts its position within a range of a distance equal to the difference in diameter between the adjustment hole portion and the protruding portion. The lens device according to claim 1, characterized by this.

4. The sensor magnet is disposed on the other side of the sheet metal member in a direction along the optical axis. The lens device according to claim 1, characterized by this.

5. The sensor holding member is adhesively fixed to the sheet metal member. The lens device according to claim 1, characterized by this.

6. The sheet metal member has a through hole portion that penetrates the surface of the sheet metal member to which the sensor holding member is fixed; The sensor holding member is fixed to the sheet metal member by filling the through hole portion with an adhesive in a state where the sheet metal member and the sensor holding member are in contact with each other. The lens device according to claim 1, characterized by this.

7. The sheet metal member forms a U shape by forming a first rising portion and a second rising portion; The actuator unit is fixed to the outer surface of the second rising portion. The lens device according to claim 1, characterized by this.

8. The lens device according to claim 7, wherein the sensor holding member is fixed to the inner surface of the first rising portion facing the inner surface of the second rising portion in a direction along the optical axis.

9. The lens device further includes a fastening member for fixing the sensor holding member to the sheet metal member, The lens device according to claim 7, wherein the fastening member fastens the sensor holding member from the outer surface of the first rising portion.

10. An imaging device having the lens device according to any one of claims 1 to 9.

Images